WHIRLWIND MINE
<br />Dewatering Use
<br />
<br />
<br />
<br />
<br />onth/Year
<br />Volume
<br />Dewatered and
<br />Treated
<br />(gal)
<br />
<br />Evaporation
<br />rate
<br />(in) Estimated
<br />Evaporation
<br />from Untreated
<br />Water Tank
<br />(gal) `
<br />
<br />
<br />otal
<br />(gal)
<br />Year 1 Total 1,621,326 57.45 160,947 1,782,273
<br />November 2008 79,489 1.61 4,640 84,129
<br />December 2008 89,942 1.26 3,632 93,574
<br />January 2009 89,801 1.68 4,842 94,643
<br />February 2009 92,971 1.49 4,295 97,266
<br />March 2009 90,023 3.34 9,627 99,650
<br />April 2009 103,542 5.69 16,400 119,942
<br />May 2009 87,960 7.49 21,588 109,548
<br />June 2009 92,635 9.47 27,295 119,930
<br />Jul 2009 11,271 9.04 26,056 37,327
<br />August 2009 95,506 7.39 21,300 116,806
<br />September 2009 104,559 5.54 15,968 120,527
<br />October 2009 151,303 , 3.45 9,944 161,247
<br />Year 2 Total 1,089,002 57.45 165,588 1,254,590
<br />1 - Estimated evaporation rates based on average monthly pan evaporation data reported for
<br />Montrose, Colorado by Western Regional Climate Center (wrcc.dri.edu)
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